Thanks Narafa, yes that would be evidence that you can place a limit order on TWS.
But since i am using IB Gateway and question also relates to all order types (any difference?)
And since IB support told me that negative prices work or not working in TWS papertrading but would not indicate if it would work in real trading.. and other agent told me something else.
I think i am still very much in assumption land still, until perhaps IB responds.
Perhaps its very clear for most others, and thats good, however for me, i am still in assumption territory.
Thanks for input Narafa though..
Cheers